c40a3731f4
This adds a new godebug to control whether the runtime applies the anonymous memory mapping annotations added in https://go.dev/cl/646095. It is enabled by default. This has several effects: * The feature is only enabled by default when the main go.mod has go >= 1.25. * This feature can be disabled with GODEBUG=decoratemappings=0, or the equivalents in go.mod or package main. See https://go.dev/doc/godebug. * As an opaque setting, this option will not appear in runtime/metrics. * This setting is non-atomic, so it cannot be changed after startup. I am not 100% sure about my decision for the last two points. I've made this an opaque setting because it affects every memory mapping the runtime performs. Thus every mapping would report "non-default behavior", which doesn't seem useful. This setting could trivially be atomic and allow changes at run time, but those changes would only affect future mappings. That seems confusing and not helpful. On the other hand, going back to annotate or unannotate every previous mapping when the setting changes is unwarranted complexity. For #71546. Change-Id: I6a6a636c5ad551d76691cba2a6f668d5cff0e352 Reviewed-on: https://go-review.googlesource.com/c/go/+/655895 Reviewed-by: Michael Knyszek <mknyszek@google.com> Reviewed-by: Ian Lance Taylor <iant@golang.org> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Auto-Submit: Michael Pratt <mpratt@google.com>
Release Notes
The initial and next subdirectories of this directory are for release notes.
For developers
Release notes should be added to next by editing existing files or creating
new files. Do not add RELNOTE=yes comments in CLs. Instead, add a file to
the CL (or ask the author to do so).
At the end of the development cycle, the files will be merged by being concatenated in sorted order by pathname. Files in the directory matching the glob "*stdlib/*minor" are treated specially. They should be in subdirectories corresponding to standard library package paths, and headings for those package paths will be generated automatically.
Files in this repo's api/next directory must have corresponding files in
doc/next/*stdlib/*minor.
The files should be in the subdirectory for the package with the new
API, and should be named after the issue number of the API proposal.
For example, if the directory 6-stdlib/99-minor is present,
then an api/next file with the line
pkg net/http, function F #12345
should have a corresponding file named doc/next/6-stdlib/99-minor/net/http/12345.md.
At a minimum, that file should contain either a full sentence or a TODO,
ideally referring to a person with the responsibility to complete the note.
If your CL addresses an accepted proposal, mention the proposal issue number in
your release note in the form /issue/NUMBER. A link to the issue in the text
will have this form (see below). If you don't want to mention the issue in the
text, add it as a comment:
<!-- go.dev/issue/12345 -->
If an accepted proposal is mentioned in a CL but not in the release notes, it will be flagged as a TODO by the automated tooling. That is true even for proposals that add API.
Use the following forms in your markdown:
[http.Request] # symbol documentation; auto-linked as in Go doc strings
[Request] # short form, for symbols in the package being documented
[net/http] # package link
[#12345](/issue/12345) # GitHub issues
[CL 6789](/cl/6789) # Gerrit changelists
To preview next content in merged form using a local instance of the website, run:
go run golang.org/x/website/cmd/golangorg@latest -goroot=..
Then open http://localhost:6060/doc/next. Refresh the page to see your latest edits.
For the release team
The relnote tool, at golang.org/x/build/cmd/relnote, operates on the files
in doc/next.
As a release cycle nears completion, run relnote todo to get a list of
unfinished release note work.
To prepare the release notes for a release, run relnote generate.
That will merge the .md files in next into a single file.
Atomically (as close to it as possible) add that file to _content/doc directory
of the website repository and remove the doc/next directory in this repository.
To begin the next release development cycle, populate the contents of next
with those of initial. From the repo root:
> cd doc
> cp -R initial/ next
Then edit next/1-intro.md to refer to the next version.